There certainly seems to be a clear break between the (predominently) two-stars on one side and the three- and four-stars on the other side of this issue. My money's on Franks and Myers being right on this one.
The lowdown on Zinni the Pooh
http://www.freerepublic.com/focus/f-news/1142417/posts
Don't forget General Abizad. He is a four star that supports Rummy. I can also bet he does not other generals saying the military command should be replaced too. These generals are lashing out at the Iraq war chain of command. Not just Rummy.